Synergistic inhibition of carbon steel corrosion in seawater by cerium chloride and sodium gluconate

被引：73
|
作者：
Ivusic, Franjo [1 ]
Lahodny-Sarc, Olga [1 ]
Curkovic, Helena Otmacic [2 ]
Alar, Vesna [3 ]
机构：
[1] Croatian Acad Sci & Arm, Inst Corros Res & Desalinizat, Dubrovnik 20000, Croatia
[2] Univ Zagreb, Fac Chem Engn & Technol, Zagreb 10000, Croatia
[3] Univ Zagreb, Fac Mech Engn & Naval Architecture, Zagreb 10000, Croatia
来源：
CORROSION SCIENCE | 2015年 / 98卷
关键词：
Carbon steel; Rare earth elements; EIS; Polarization; Neutral inhibition; RARE-EARTH MERCAPTOACETATE; CALCIUM GLUCONATE; ZINC CORROSION; MILD-STEEL; AA2024; ALUMINUM; NACL SOLUTION; SALTS; SURFACE; PART; INITIATION;
D O I：
10.1016/j.corsci.2015.05.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this research the effect of cerium (III) chloride heptahydrate (CC) and sodium gluconate (SG) on the corrosion inhibition of carbon steel C45 (1531) in natural seawater has been evaluated using electrochemical methods and scanning electron microscopy (SEM). The results show that substantial corrosion inhibition (94.98%) using CC and SG can be obtained in synergistic manner. Surface analysis confirmed the presence of cerium ions incorporated in the protective layer of carbon steel specimen. SG acts predominantly as anodic inhibitor whereas CC acts as a mixed type inhibitor. Using both inhibitors predominant mechanism of anodic inhibition is observed. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：88 / 97
页数：10
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